package thread;

public class Demo17 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        Object lock = new Object();
        Thread t1 = new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                synchronized (lock) {
                    count++;
                }
            }
            System.out.println("t1 end");
        });
        Thread t2 = new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                synchronized (lock) {
                    count++;
                }
            }
            System.out.println("t2 end");
        });
        t1.start();
        t2.start();

        t1.join();
        t2.join();

        System.out.println(count);

    }
}
